Like this:

I have been extremely busy and haven’t had much time for sphering lately, but I did manage to grind out a trifecta of Petoskey stone spheres last week. The three rough stones were given to me by a new friend and fellow rockhound. He specializes in making stone cabinet knobs which are quite stunning using native Michigan Petoskey and Septarian stones. If he had a website, I would link to it, but alas, he does not. He gave me three Petoskey stones, I sphered them and he got first pick. They ranged in size from 1.65 inch to about 2.4 inches in diameter. I kept the remaining two (the smaller ones). They can be found for sale on my Etsy page by clicking here.